I do have a toe tram gage and a couple of caster/camber gages so I guess that qualifies me as a semi-shade tree mechanic for home alignments.
I once bought a new Ford Lightning PU and it followed ever irregularity in the road to an alarming degree. I slapped my gage on the tires and it was pretty clearly out in camber and without going further I decided that was reason enough to return to the dealer. I rolled into the service dept and explained how the truck was all over the road and I had checked camber with my own gage and found at least that was out of spec. Talk about getting an amused look - the tech was like, sure you did. Was that by eyeball or a 3’ level. But since it was brand new they decided to humor me and run it through for a check while I waited. I watched them kind of talking amongst themselves and glancing at me in the waiting room - or maybe that was my imagination. Anyway, after about an hour he sheepishly returned and said - well, in fact it was out of spec like you said. Matter of fact, it was out so far we had to install a camber kit in order to get it in spec. Made my day.
Owned the truck for 17 years and with those wide tires it wandered all of the road during all of them.